Reinard blum



. R.' BLUM.

- Stove Damper.

No. 89,280. Patented April 27.1869.

. increasing the draught.

with a slot, through which the lower end of the shank at each end provided with a socket e. The plate b, on the contrary, is made of metal @anni ,tira

Letters Patent No. 89,280, dated April 27, 1869.

STOvE-GOVERNOR.

m The Schedule referred to in these Letters Patent and making part of the same.

To all whom it mwy concer-n:

Be it known that I, RENARD BLUM, of Champaign, in the county of Champaign, and in the State of Illilower end of the plate b rests, as above mentioned, the endof the lever, after having formed said shoulder, being inserted in the lower socket e ofthe plate a.

The lever D, which tapers upward, is at its upper end connected with the lower outer end of the shank B, by means of a screw-rod, E.A

This rod has on one end. a hook, which passes through the outer end of' the shank B, and the screw end of said rod passes througha hole in the upper end of the lever D, on the outside of which it is secured by a nut, h.

The governor is attached to 'the flue, r pipe of the stove it is toV govern at a suitable distance from the fire-place.

ments in Stove-Governor, and do hereby declare the following to be a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon. he nature of my invention consists in the construction and general arrangement of a stove-governor, or self-regulating stove-pipe damper, which will close gradually as the heat increases, thus lessening the draught, and as the heat decreases, it will again open,

my lnventlon appertamsto make and use the same, I the damper O.

a expands, which will, of course, loosen the lower en d ofthe lever D, allowing it to yield so that the damper C will lower itself from its own weight, and the more A represents a stove-flue, or pipe, made in any of the known and usual ways, and provided on one side As-soon as the heat, then, diminishes, the plate a contracts, tightens the 'lower end of the lever, raises the damper, and again increases the draught.

It will thus be seen that it is an entirely self-regulating stove-pipe damper, which I have given the name of a stove-governor, as it is to a stove what a governor is to an engine.

Having thus fully described my invention,

What I claim as new, and desire to secure by Letters Patent, is-

1. The arrangement, on the outside of a stove-pipe, of the expansive plate a, .having a socket, e, at each end, the non-expansive plate b, and the lever D, the lower end of said lever resting in the lower socket e, and the plate b resting on a shoulder, j, on the lever, and its upper end inserted in the upper socket e, all

passes.

This end of the shank also passes through slots in two metal plates, a and b, which are placed on the outside of the stove-pipe, and the outer one Ib riveted to the pipe.

This plate b is also provided on its outside with two ears, or lugs c, between which the shank is pivoted.

inside thestove-pipe, and secured to lugs d d on the same.

The 'damper Gis cut and formed so as to fit the pipe A, both when raised and lowere The plate a, which lies snug up against the stove metal, is made ofY metal that will easily expand or contract as the heat increases or decreases, and is that will not readily be affected by the heat.

The upper end of the plate b is inserted into the socket e at the upper end of the plate a, and the lower end of said plate b rests'on a shoulder, f, near the lower endof the lever D.

This lever is, at its lower end, of thesame width as the plate b, and forms the shoulder f on which the as and for the purposes herein set forth.

In testimony that I claim the foregoing, I have hereunto set my hand, this 11th da Y of January, 1869. REINARD BLUM. Witnesses:

C. W. BEYER, Grao.- W. CURTISS.

The nut h is then screwed up tight enough to raise.` Y

As the heat from the re increases, the metal plate 

